Filter-press.



No. 69|,030. Patented Ian. I4, |902. E. WERNEGKE. FILTER PRESS.

(Application led Aug. 31, 1901.)

4 Sheets- Sheet (N0 Model.)

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No. 691,030. Patented lan. I4, |902.

E. WEBNECKE.

FILTER PRESS.

(Application vled Aug. 31, 1901.) (No Model.) 4 Sheets-Sham 2.

IIIHIlvlllllllll'lllllllllllllllllllll m: Ncnms Permis ca. mom-mmc..wAsHmu'mN, D. c.

Patented lan. I4, |902. E. WEBNECKE.

FILTER PRESS.

(Application med Ang. 31, 1901.)

4 Sheets-Shee 3.

(No Model.)

Won/vens Nu. 691,030. Patented lan. I4, |902.

E. WERNECKE.

FILTER PRESS. (Application filed Aug. 31, 1901.) (No Model.) 4Sheets-Sheet 4.

wllnirrnn Parnu@ turion,

EUG-EN VERNECKE, OF GERSTEWITZ, NEAR VVEISSENFELS, GERMANY.

PRESS.

SPECIFICATION forming part of Letters Patent No. 691,030, dated January14, 1902.

Application filed August 31,1901.

.T0 all whom, t may concern:

Be it known that I, EUGEN WERNECKE, a subject of the Emperor of Germany,residing at Gerstevvitz, near Weissenfels, Germany, have inventedcertain new and useful Improvements in Filter-Presses; and I do hercbydeclare the following to be a full, clear, and exact description of theinvention, such as Will enable others skilled in the art to which itappertains to make and use the same.

My present inven tion refers to filter-presses, and more especially to aspecial construction and arrangement of such presses by which theirWorking is rendered automatic and continuous.

The invention consists in arranging a number of filtering-chambers in acircle around a hollow shaft, through Which the mixture is admitted thatis to be filtered, and providing xed projections on the stationary partsof the machine, by means of Which the different functions necessary forthe operation of the filtering-chambers are performedautomatic- `ally asthe chambers are rotated around said shaft.

Of the accompanying drawings, Figures 1 and 2 are different verticalsections through my said machine. Fig. 3 is a detail view of the lid orcover of one of the ltering-chanibers, showing also the device by whichit is closed `and opened. Fig. i is a vertical section through the saidclosing device. Fig. 5 is a view of the frame or stationary part of themachine, showing the different projections by means of which th'edifferent operations are performed. Figs. 6, 7, 8, and 9 are details ofthe arrangement. Fig. 10 is a side elevation of the standard shown inFig. 5. Figs. 11 and 12 are details shown on an enlarged scale.

The same letters and numerals of reference are employed to indicatecorresponding parts in all the figures.

S and S2 are tWo standards which form the stationary frame of themachine. A is a holloW shaft fixed at both ends in the said standardsand likewise stationary. On this shaft is fitted, so as to turn easilyon it, a sleeve B, forming the boss or center piece of a casing providedat its circumference with a number of chambers C C, closed by lids orcovers D Serial No. 73,957. (No model.)

D. Each of these lids is provided with two .fianges D' DQ and betweenthese flanges are fixed-a number of pins D2 D2, which engage With theteeth of a pinion P, fixed on a shaft P', that turns in bearingsarranged at the top of the standards S S2. It will be seen that ifproper means are provided for turning the shaft P with the pinion P thewhole casing will be caused to rotate around the shaft A.

Every chamber Chas a cylindrical portion into which is fitted apiston-shaped piece E, provided with a rod e, by means of which it canbe made to advance or recede, thus diminishing or increasing the freespace Within the chambers C.

In Figs. 11 and 12 the inside arrangement of the filtering-chambers C isshown; but I Wish it to be understood that this arrangement is onlydescribed by Way of an example, as it Will be readily seen by everyexpert that the nature of my invention would not be in any Way affectedif the filtering-chambers were differently arranged according to any oneof the divers plans generally in use in presses of this kind.

In case the liquid resulting from the filtra tion is itself withoutvalue both the pistons E and the covers D may be grooved and perforated.Their surfaces are covered by a plate of perforated sheet-iron,Wire-gauze, or such like material F, and this again is covered by thefiltering-cloth F. The liquid issuing from the perforations is allowedto spread out over the surfaces of the covers and is led off in anysuitable Way. If it is important to collect the liquid, the piston onlyis provided With grooves and With. filtering material, as shown in Fig.12. In this form a pipe F2 is connected with each filterchamber. Thepipes F3 are secured to and rotate vwith the filter-frame, and saidpipes extend radially of said frame toward the tubular support A. Areceptacle F'l is arranged to receive from the free ends of said pipesF3 the liquid escaping from the lter-chambers O. The receptacle F4 isstationarily supported, and the pipes Fa are of such length as torevolve with the series of filter-chambers without interfering witheither the support A or` said receptacle F1. Of course no liquid willbedelivered to either of the pipes F3 except IOO when its connectedfilter-chamber is in an elevated position.

At a a hole or opening is provided in the hollow shaft A, andcorresponding thereto a number of studs b, equal to the number ofchambers C, are fixed in the center piece B, so as to register with thehole a in certain positions of the rotating frame. Attached to the studsb are a corresponding number of pipes b', which connect them withopenings in the sides of the chambers C, as shown in Fig. 2.

On the standards S and S2 are fixed a number of projections, of which eand e2 (see Figs. 5 and l0) serve to move the pistonsE up and down inthe cylindrical parts of the chambers C. This is effected by means ofthe crossbars g, fixed to the rear ends of the piston-rods e andprovided with a small rollerat each end adapted to engage with saidprojections. The other projections f, j", f2, and f3 are adapted toperform the function of opening and closing the covers D. For thispurpose projections C are provided on each side of the covers D, (seeFigs. 2, 3, and 4,) and in these projections bolts 2 are loosely fitted,which are threaded with right and left screwthreads. The bolts 2 areprovided with heads 6, the shape of which is seen in Fig. 3. Every head6 carries a fixed pin 7 and a yielding pin 8. These latter serve toprovide a certain amount of frictional resistance to the turning motionof the heads 6, so as to prevent unintentional movements during theoperation of the machine. At both eXtreme ends of the motion of the head6 a small excavation is made in the surface of the projection C', intowhich the pin 8 enters, thus fixing the head 6 in that position until asufficient force is brought into play to cause pin 8 to yield, and thusto allow head 6 to be turned. On the upper right-hand screw-threadedportion of the bolt 2 a nut 3 is fitted,the shape of which is also shownin Fig. 3. This nut is also provided with a yielding pin -and a rigidpin 4. The action of this arrangement is as follows: When one of thefiltering-chambers C has reached the position marked I in Fig. Las willbe seen from the drawings,the cover D is open and is held in thatposition for the time being by the force of gravity. As the casingsupporting series of filter-chambers rotates in the direction indicatedby the arrows in Fig. 1 the rollers at the ends of the crossbars gstrike the projections or cams e and by sliding along them project thepiston E toward the outer end of the chamber C, and thereby push out thecake of solid matter that has been formed by the filtering process. Assoon as the cross-bars g leave the rear ends of the cams e they reachthe fore ends of cams e2 and by sliding along their surface are made toretract the pistons E into their initial position. At the same time thelid D has been gradually closed by its own Weight,and it only remains toscrew it down Iirmly,so as to make chamber C ready for receiving a freshcharge parts immediately before they strike the respective projection fand the upper diagram illustrating their position immediately after theyhave left the projection f. The first operation is shown in Fig. 6. Asthe chamber C rotates, the fixed pin 7 in the head 6 strikes theprojection f. The head 6 is thereby rocked to the position shown in theupper diagram of Fig. 6,and the bolt 2,being rigidly connected thereto,follows its motion, thereby slightly loosening the nut 3, which,beingheld in position by the yielding pin 5,cannot participate in the rockingmotion. This loosening or retracting of the nut 3 is necessary in orderto allow it to freely swing into a position in which it overlaps thecover D, so as to lock it to the edge of chamber C. This operation isthe next to be performed. Referring to Fig. 7, it will be seen that nowthe fixed pin 4 in nut 3 strikes the projection f', as indicated in thelower diagram, and that thereby the nut 3 Will be rocked into theposition shown in the upper diagram, in which it slightly overlaps theedge of the cover D. By this motion it is also lowered,since the bolt 2is not free to participate in its motion; but as this bolt haspreviously been rocked in the same direction, the screw-threads beingopposed, no actual tightening down of the lid D as yet takes place. Inorder that this can be eifected, the head 6 must be returned into itsinitial position, and this function is now performed by the projectionf2, which is struck by the outer surface of the head 6 as the rotationof C proceeds. I preferably construct the projection-f2 in the form of asmall roller fixed on the end of a spring, as shown in Figs. 5 and 8,because the tightening of the bolt 2 ought to be stopped as soon as asufficient locking action is obtained, and therefore if the projectionf2 were rigid like the others either the screw would not be drawn downto a sufficient tightness or else a breakage would result. Now thechamber C is ready to receive a fresh charge. It has in the meantimereached the position marked V in Fig. l, and in this position thecorresponding stud b registers with the opening a in the shaft A. Theinterior of the shaft A is supposed to be connected to a conduit (notshown) by which the liquid to be filtered is admitted under suitablepressure. While the rotation proceeds from position V to position VI thefiltering process takes place, and when the chamber C has returned toposition I it is ready to be emptied. This phase of the operation isshown in the lower diagram of Fig. 9. As will be seen, the surface ofnut 3 strikes the projection f3 and is thereby swung back into theinitial position shown in the upper IOO IIO

eenoee diagram, in which it leaves the cover D free to yield to theforce of gravity and to open, whereupon the same play is repeated.

In the drawings I have shown the machine to consist of eightltering-chambers; but it will be understood that any other number mightbe employed without affecting the nature 0f myinvention. Likewise if theoutput of the machine is to be increased it will be understood that thiscan be done by extending the length of the shaft A and correspondinglydimensioning the chambers C. If one opening a is not foundsufiicient,any number might be employed, and it is also evidentlypossible to extend the diameter of the opening a in a circumferentialdirection, so as to increase the time in which the filteringprocesstakes place as each chamber C passes through the operative phase.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declarethat-what I claim isfl. In a filter-press the combination with astationary frame of a hollow shaft adapted to admit the liquid that isto be filtered, a system of filtering-chambers arranged in a circlearound said shaft and provided with pistons and hinged covers and ofmeans for locking said covers, admitting a charge of liquid to each ofsaid chambers, reopening the covers, advancing and reti-acting thepistons and relooking the covers such means being adapted to beautomatically operated by rotating the said system of chambers aroundthe said shaft, substantiallyas and for the purpose de# scribed.

.2. In a filtering-press the combination with a stationary frame havinga number of projections or cams attached thereto of a hollow shaftadapted to admit the liquid to be filtered, a system of ltering-chambersarranged in a circle and adapted to rotate around said shaft, saidchambers being provided with hinged lids and radially-movable pistonsand of means for advancing and retractin g said pistons and for lockingand unlocking said lids or covers, such means being adapted to engagewith said projections or stationary cams and to be operated thereby whenthe system of chambers is rotated around said shaft substantially as andfor the purpose set forth.

3. In an automatically-operated filteringpress the combination with astationary frame provided with a number of projections or cams of asystem of filtering-chambers arranged in a circle and adapted to rotatearound a hollow shaft admitting the liquid to be treated, said shaftbeing provided with an opening in its circumference and of ductscommunicating with the said chambers and registering with said openingin a predetermined position of every chamber, substantially as and forthe purpose described.

4c. In a filtering-press the combination with a stationary frame of ahollow shaft adapted to admit the liquid to be treated a system offiltering-chambers arranged in a circle and adapted to rotate aroundsaid shaft of means for rotating said system of chambers around saidshaft and of other means for charging operating and discharging saidchambers such means being-,adapted to be automatically actuated by therotation of said system of chambers, substantially as and for thepurpose described.

5. In a filtering-press the combination with a stationary frame, ahollow shaft adapted to admit the liquid to be treated, an opening insaid shaft, a system of filtering-chambers arranged in a circle andadapted to rotate around said shaft, means for rotating said system ofchambers and ducts communicating with their interior and in certainpositions of the said chambers registering with said opening in saidshaft, of a suitable number of stationary cams or projections attachedto said frame and of means for charging, operating and dis-g chargingsaid chambers such means being adapted to engage with said cams and tobe operated thereby, substantially as and for the purpose set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

EUGEN WERNECKE. Witnesses:

CHAs. J. BURT, RUDOLPH Fnrcnn.

